baber/WOPTO huggingface dataset:
Patent GB-1271427-A (GB)
Title: Preparation of mixed fertilizers and ammonium nitrate
IPC: C05B7/00
Filed: 1969-06-25
Abstract: 1,271,427. Ammonium phosphate; ammonium nitrate; ammonium sulphate. USS AGRI-CHEMICALS Inc. 25 June, 1969 [27 June, 1968], No. 32171/69. Heading C1A. Phosphate fertilizer, and ammonium nitrate are produced by digesting phosphate rock with a solution of nitric acid and ammonium sulphate, removing the gypsum so formed, concentrating and cooling the liquor so obtained to crystallize ammonium nitrate whilst maintaining the pH of the liquor below 1À5, removing this ammonium nitrate and ammoniating the resulting liquor to give a product with a N:P 2 O 5  weight ratio of less than 2À0. The gypsum obtained may be treated with ammonia and CO 2  to give ammonium sulphate which is recycled to the process. The liquor is preferably concentrated to from 70-85% by weight solids before being cooled, e.g. to between 15‹ and 45‹ C. to crystallize the ammonium nitrate. The preferred N : P 2 O 5  ratio is 1À0 or lower and the pH of the liquor may be maintained below 0À5. A solid product can be obtained by conventional processes.
Patent GB-392953-A (GB)
Title: Improvements in and relating to means for eliminating undesirable harmonics in electric circuits
IPC: H02K19/36
Filed: 1931-11-20
Abstract: 392,953. Supply systems. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London, and COE, R. T., Brandeth, Dunchurch Road, Overslade, Rugby. Nov. 20, 1931, No. 32249. [Class 38 (iv).] In order to absorb undesirable harmonics present in an A.C. system a synchronous machine generating a voltage of fundamental frequency and one or more voltages of harmonic frequency is connected to the system. The Figure shows a fundamental frequency generator F coupled to harmonic frequency generators H1, H2, the windings of all being in series and the polepieces of all having squirrel-cage windings to compensate armature reaction. Each machine element has an independent field winding whereby the component voltages may each be varied in amplitude and means such as racking stators are provided for adjusting the phase relationship of each component. The machine may be self-driven and may be coupled to a mechanical load or an auxiliary generator supplying its power to the mains. The harmonic frequency generators may be short-circuited when starting by a switch T. An independently-driven fundamental frequency generator may be connected in series with a motor-driven harmonic frequency generator or a single machine element designed to generate the fundamental and harmonic frequencies may be self-driven or motor -driven from the mains.
Patent GB-137055-A (GB)
Title: Improvements in Covers for Boxes or like Containers.
IPC: G09F3/06
Filed: 1919-12-24
Abstract: 137,055. Myers Manufacturing Co., (Assignees of Lackey, W. S.). May 31, 1918, [Convention date]. Lids and covers. -In order to facilitate the application of an adhesive label to a metal cover of a box or like conbainer, a disk of pasteboard &c. is secured to the cover by bending the metal so as to form a doubled corrugated flange arranged, as shown, to grip the edge of the disk against the upper face of the cover.
Patent GB-1216025-A (GB)
Title: Flashing construction
Inventor: JAMIESON LESLIE GUY
IPC: E04D13/155
Filed: 1969-06-26
Abstract: 1,216,025. Roof flashing. L. G. JAMIESON. 26 June, 1969 [21 Feb., 1969], No. 32303/69. Heading E1W. A flat roof flashing construction comprises a flashing of L-shaped cross-section providing a seating between its base 15, secured to the roof deck 10 'by means of nails 16 in expansion slots 17, and its back 12 for a cant 14 of insulating material. The flashing is strengthened by brackets 20 between which cants are fitted. Layers or roofing felt 22, 23, 24 are layed over the cant 14 and surmounted by two layers of felt flashing 25 reacting from above the cant  to a short distance beyond the base 15. A weather-proof flashing membrane 26 is layed above the felt and secured along its top edge to the back 12 crimped between the two flanges 28, 30 of the bracket 32. A facia assembly 34, 36 surmounts the bracket 32 and is retained under a lip 39 on the wall 18. Pitch and gravel poured over the membrane 26, flashing felts 25 and roofing felts 22, 23, 24 completes the construction. Another embodiment, Fig. 3 (not shown) incorporates a corrugated metal roof 44 to which the L-shaped flashing element is secured and surmounted by fibrous insulation overlay 48 onto which the cant 50 is placed in a similar fashion as .before.
Patent GB-175085-A (GB)
Title: Improvements in earthing clips for electric conductors
IPC: H01R4/64
Filed: 1920-11-16
Abstract: 175,085. Swainson, E., (trading as Thermal Electric Works). Nov. 16, 1920. Couplings.-An earthing-clip for a conductor 5 consists of a terminalshank 4 screwing into a slotted bridge 2, and a flexible metal band or wire 3 passing through the slots and encircling a pipe or rod 1 which constitutes the earth. The band is tightened round the pipe by turning the terminal-shank. One end of the band may be permanently attached to the bri'dge.
Patent GB-801768-A (GB)
Title: Improvements in pressure fired vapour generators
IPC: F24H1/40
Filed: 1956-10-24
Abstract: 801,768. Water-tube steam boilers; superheaters. FOSTER WHEELER, Ltd. Oct. 24, 1956 [Oct. 25, 1956], No. 32432/56. Classes 123(2) and 123(3) A pressure-fired boiler comprises a steam and water drum 13 disposed above a cylindrical pressure-tight shell 14 within which is a concentric metal baffle 15 surrounding a combustion chamber 16 having a refractory floor 17 spaced from the lower edge of the baffle 15. Concentric rows 18, 20 of water tubes 19 line the inner surface of the baffle the tubes extending between ring headers 21, 22 which are respectively connected to the drum 13 by risers 70 and downcomers 68. Three burners 24 at the top of the casing 14 fire downwardly into the chamber 16, the hot gasses passing through a lower outlet 23 formed by bending the tubes 19 inwardly and spacing them apart at the level of the outlet. The gases pass under the baffle 15 and rise in an annular space 27 formed between that baffle and a second circular baffle 26 to discharge through an outlet 32. A vertical bank of water tubes 29 is arranged in the space 27, the tubes extending between the ring header 21 and a lower ring header 30, the latter being connected to the downcomers. The lower parts of the tubes 29 are inclined outwards to define, with the lower parts of the tubes 19, an annular space 31 in which is disposed a superheater 34. The superheater comprises an annular bank of. sixteen horizontal layers of tubes, each layer consisting of three tubes each bent to form a spiral having two turns with its inlet at the inner circle of the layer and outlet at the outer circle. All the inlet and outlets of the layered tubes are connected by vertical tubes to headers 56, 58. The layered tubes are spaced apart by rods 61, 62 and the superheater bank is supported between plates 65, 63, so that the whole of the gases from the outlet 23 are constrained to pass through the layers.
Patent GB-218927-A (GB)
Title: Improvements relating to electric motor and like controllers
IPC: H01H19/11
Filed: 1923-12-28
Abstract: 218,927. Sunderland Forge & Engineering Co., Ltd., and Blair, W. Dec. 28,1933. Switches, quick-action. - In controllers of the rotary spindle type carrying a spring seated ball which enters stationary recesses so as to give a succession of definite checks, the ball f is mounted in a box e and is adjustable by a screw j.
Patent GB-854232-A (GB)
Title: Vacuum induction furnace and method for its operation
Inventor: BUSSARD ADRIEN
IPC: F27D11/06
Filed: 1958-10-10
Abstract: 854,232. Electric induction furnaces. HERAEUS G.m.b.H., W. C. Aug. 24, 1959 [Oct. 10, 1958], No. 32456/58. Class 39(3). In a vacuum induction furnace of the kind in which a heat radiation reflector 7, 8 is located between the coil 3 and the charge 4, the reflector may be withdrawn from the coil after the inductive heating of the charge. As shown, the reflector is divided into two parts 7, 8 along a plane 6, whereby one or both of the parts may be withdrawn upwardly and downwardly respectively out of the coil. Heat absorption surfaces, e.g. the surfaces of the coil facing the charge, are provided to absorb the heat radiated by the cooling charge. The reflector may be of milky quartz having a glazed surface on the side facing the charge or may comprise an external cylindrical quartz jacket, an internal graphite jacket and a filling of graphite grit.
Patent GB-198385-A (GB)
Title: Improvements in or relating to the manufacture and utilisation of formic acid
IPC: C07C51/10
Filed: 1921-12-03
Abstract: A catalytic material for the production of formic acid by interaction of carbon monoxide and water vapour comprises "activated copper suboxide," which is prepared either by precipitating copper from a solution of copper sulphate with metallic zinc, and then washing, drying and roasting the precipitate in air, or by moistening other copper precipitates from copper salts, or granulated or powdered copper, with dilute zinc sulphate solution, followed by washing, drying and heating in air.  After a short time, the copper suboxide becomes inactive and must be reactivated by moistening it with dilute zinc sulphate solution, washing, drying, and roasting in air.ALSO:Formic acid is produced by passing methane or a mixture of carbon monoxide and water vapour at a temperature of 250-800 DEG  C. over a metallic oxide, which preferably comprises an "activated copper suboxide," prepared either by precipitating copper from a solution of copper sulphate with metallic zinc, and then washing, drying, and roasting the precipitate in air, or by moistening other copper precipitates from copper salts or granulated or powdered copper with dilute zinc sulphate solution, followed by washing, drying and heating in air.  Gases such as air gas, water gas, coal gas or natural gas may provide the source of the methane or carbon monoxide; and their sensible heat, if any, may be utilized for the formic acid reaction, which is endothermic.  It is stated that acetylene reacts with formic acid in the vapour phase to produce acetic acid.
Patent GB-160296-A (GB)
Title: Improvements in internal combustion engines
IPC: F02B1/00
Filed: 1919-12-29
Abstract: 160,296. Braid, O. G. Dec. 29, 1919. Four-stroke - cycle engines; cylinders, pipes for.-Combustible mixture is compressed in a pump space a which communicates through a non-return valve 10 with a reservoir 11 discharging into a combustion space b through a ncn-return valve 14 which prevents back - firing, and the normal cylinder admission valve 13. The capacity of the reservoir is equal approximately to the volume of the working space, and the charges delivered by the pump during the explosion stroke of the piston are stored in the reservoir until the commencement of the suction stroke. The piston 8 is guided by a cross-head 5 sliding in a cylinder 6 the connecting rod being secured to the crosshead by a universal joint.
Patent GB-777978-A (GB)
Title: Trihydroxy polyoxyalkylene ethers of glycerine
IPC: C08G65/28
Filed: 1954-11-10
Abstract: Polyoxyalkylene ethers of glycerol have three polyoxy-1,2-propylene chains attached to the glycerol nucleus and three hydroxypolyoxyethylene chains attached to each of the polyoxypropylene chains.  The oxy-1,2-propylene groups are 48-66 mol. per cent of the total oxyalkylene groups and the average number of oxy-1,2-propylene groups is at least 63 per glycerol nucleus and of oxyethylene groups at least 33.  Preparation is effected in two steps, batch-wise or continuously, under relatively moisture-free conditions with an alkali metal hydroxide or alcoholate catalyst, and preferably in an inert atmosphere, e.g. of nitrogen.  Heat may be removed to maintain the temperature at 120-140 DEG  C.  Reaction is terminated by neutralization of catalyst, e.g. with acetic acid.  The products may be washed with water and distilled at low pressure to remove volatile material. They are non-ionic surface active agents, useful as emulsifying agents especially for parasiticides.  Examples describe detailed preparations of some of the products, give their physical properties and compare their emulsifying properties with those of known emulsifying agents.  Reference has been directed by the Comptroller to Specification 731,603.ALSO:Ethers with a polyoxy-1, 2, -propylene chain attached to each hydroxyl group of glycerol and a hydroxyl terminated polyoxyethylene chain attached to the outer end of each oxypropylene chain and the oxypropylene groups being 48-66 mol per cent of the total oxyalkylene groups (see Group IV(a) are good emulsifying agents particularly for parasiticides and insecticides.  They form stable oil-in-water emulsions with little mixing, are also useful for dispersing pigments, as blending, thickening, and wetting agents and as ingredients of cosmetic preparations and detergents.  Example 3 illustrates their power of emulsifying petroleum oils in water and compares them in this respect with known emulsifiers.  Reference has been directed by the Comptroller to Specification 731,603 [Group IV(a)]
Patent GB-251590-A (GB)
Title: An improved method of spinning linen and other fibres on wet spinning frames
IPC: D01H13/30
Filed: 1925-12-24
Abstract: 251,590. Alexeeff, N., and Petroff, G. May 1, 1925, [Convention date]. Moistening.- In wet spinning processes, the wetting is effected at the ordinary temperature by adding to the water salts of naphtha sulphonic acids, aromatic sulpho-fatty acids, sulphonated fats and salts of octa-hydro anthracene sulphonic acid. The rove may be wetted in the spinning mill or beforehand on bobbins. Solutions of .05 per cent strength or more may be used.
Patent GB-1279738-A (GB)
Title: Resilient rotary coupling
IPC: G01L7/00
Filed: 1970-07-06
Abstract: 1279738 Shaft couplings LEIGH INSTRUMENTS Ltd 6 July 1970 [7 July 1969] 32611/70 Heading F2U Two shafts each rigid with a member 112, 148 with a contact part 114, 154 are coupled by two elements 120, 142 each with a tab 126, 144 and connected by a preloaded spring 128, the parts 114, 154 being at the same radius as the tabs which urge them into alignment. The spring may have one revolution of preload. The shafts may connect barometric altimeter with a drive to an indicator (e.g. pointer on dial plus digital dials), the drive being electrically driven to give a computed indicator reading. A suitable stainless steel spring 136 for an altimeter drive is described.
Patent GB-300211-A (GB)
Title: Improvements in or relating to aerial systems
IPC: H01Q21/12
Filed: 1928-11-08
Abstract: 300,211. Marconi's Wireless Telegraph Co., Ltd., (Assignees of Peterson, H. 0.). Nov. 8, 1927, [Convention date]. Directive signalling ; aerials. - A directive system comprises elementary antennae 6 arranged transversely of a closed feed-line 2, 4, the loading effect of the " pick-up " elements 6 on the feeder line being such that the velocity of the wave along the aerial approximates to that of the signal in space. Pick-up along the line of propagation takes place to only a relatively limited extent. To increase their impedance, the elements 6 are made shorter than half the working wavelength, or they are coupled to the feed-line by external condensers 12, as shown in Fig. 3, or by external resistances. Or the antennae mav be connected on each side of condensers inserted in series with the feeder lines. Fig. 6 illustrates a series of looped antennae 18 similarly connected to a closed feeder line. Preferably the system is not tuned to a definite wavelength, but responds to a band of frequencies. To make the system unidirectional, the feed lines are closed through a resistance 8 equal to the surge impedance of the loaded line. To eliminate residual back-end "pick-up," two or more wave aerials 20, 22 are staggered in broadside by an odd number of quarter wave-lengths, as shown in Fig. 7, so that signals from the desired direction are combined in phase in the receiver 10, whilst those coming from the opposite direction are combined in phase opposition. Specification 299,447 is referred to.
Patent GB-674941-A (GB)
Title: Improvements in a power operating mechanism for a typewriter or like machine
IPC: B41J23/06
Filed: 1948-12-17
Abstract: 674,941. Typewriters &c. ROYAL TYPEWRITER CO., Inc. Dec. 17, 1948 [Feb. 3, 1948], No. 32739/48. Class 100 (iv). Relay actuation. In a typewriter, adding machine, calculator, &c. the actuator of a type lever, carriage return mechanism, back spacer, line spacer, case shift mechanism or tabulator is power operated through a relay action wherein a driving member is coupled to the actuator by an interponent connected to the actuator, the interponent being biased toward operative engagement with the driving member, but normally held free therefrom by key-controlled means effecting snap operative engagement, the said means being responsive (a) to return movement of the key and preferably also (b) to completion of the required actuation, to reset the interponent clear of the driving member. The response (a) ensures that temporary key depression when the driving member power source is disconnected does not " cock " the mechanism for actuation when the power source is reconnected, while response (b) prevents repeat actuation if the key is held down. As shown a snatch roll 118 driven by an electric motor is connected to a type-bar 101 by depression of the appropriate key 143, 143a ... having a projection 165, 165a or 165b (of such lever-length from the key pivot 144 or 144a as to provide equal vertical key-depression in all banks) which rotates a spring-loaded lever 147 carrying a spring flipper 151; the flipper depresses an actuator 119 about its floating pivot 121 so that a trigger 136 thereon is rotated by a fixed stop 129 until its nose 138 is transferred from the holding surface 139 of a spring pawl 132 to its cam surface 140, whereupon the pawl snaps into engagement with the snatch roll 118; if the latter is stationary, subsequent key release allows a spring 127 to lift the actuator 119 so that a fixed stop 124 causes the trigger 136 and pawl 132 to be restored to the position shown; if however the roll 118 is being driven the actuator 119 is pushed forwards, its front ends 123, 123a sliding respectively on the stop 129 and in a comb guide 120, while its rear end, through the pivot 121, actuates the appropriate lever 105, 105a ... which is linked at 104 to the type-lever and at 108 to the universal bail 110 of the carriage escapement. Movement of the parts carries the pawl 132 out of range of the roll 118 and the contact surface 159 of the actuator out of range of the flipper 151, whereupon the spring 127 lifts the actuator and restores the trigger and pawl as above; the type-lever and actuator are finally restored to the position shown by a spring 113, the flipper 151 yielding for this purpose if the key has not been released. As shown the stops 124, 129 are of comb form, each tooth being bent for timing- adjustment of its associated action; in another form adjustment is partly by bending the horns of the trigger and partly by rotating a rod of semi-circular cross-section replacing the stop 129.
Patent GB-721940-A (GB)
Title: Improvements relating to ventilating and heating systems for vehicles
IPC: B60H1/34
Filed: 1952-12-24
Abstract: 721,940. Ventilating vehicles. DAIMLERBENZ AKT.-GES. Dec. 24, 1952 [Dec. 24, 1951], No. 32765/52. Class 137. In a vehicle ventilating and heating system wherein a distributing trunk 10 extends across the width of the vehicle and is connected at one end to a cold fresh air supply passage 14 and at the other end to a fresh air passage 12 in which a heater 11 is disposed, the interior of the trunk 10 is divided by a diagonally extending partition 21 forming two compartments, one of which. receives the cold air flow 17 and the other receives the heatable air flow 16. The heater 11 is inserted in the cooling water circuit of the vehicle engine and is controlled by a valve 13. The passage 14 has a valve 15 which may be operated automatically for instance in dependence on the outer atmosphere, the pressure head or the speed of travel. As shown, the partition 21 is vertical and distribution apertures 22, 23 are provided in both compartments of trunk 10. In a modification only the compartment receiving the heatable fresh air is apertured and the partition, which runs from the lower left hand corner to the upper right hand corner of the trunk, is perforated to allow the two air flows to mix before leaving the trunk. Branches may be fitted to the trunk to provide air for demisting nozzles at the windscreen or side windows.
Patent GB-907718-A (GB)
Title: Hydrophilic base plates for diazo presensitized lithographic printing plates
IPC: B41N3/03
Filed: 1958-10-14
Abstract: 907,718. Photolithographic printing-plate. LITHOPLATE Inc. Oct. 14, 1958 [Nov. 1, 1957], No. 32784/58. Class 98 (2). A support is treated with a polyfunctional amino-urea-aldehyde resin or a sulphonated urea-aldehyde resin in aqueous solution to result in an hydrophilic layer, and then with a light-sensitive diazo compound which becomes hydrophobic and insoluble on exposure. The support may be of paper, resin impregnated paper or, particularly, of metal and the resin therefor ureaformaldehyde reaction with an amine, polyamine or polyimine, or else reacted with an alkali metal sulphite. Descriptions of producing the resins are provided and amplified by references to foreign Specifications, and the diazo sensitizers are mainly disclosed by similar references. Eight examples describe production of the resin layers and treatment thereof with the condensation product of paraformaldehyde and p-diazo-diphenylamine sulphate as sensitizer.
Patent GB-1208620-A (GB)
Title: Sewage treatment apparatus
IPC: C02F3/12
Filed: 1968-07-10
Abstract: 1,208,620. Treating sewage. FMC CORP. 10 July, 1968 [10 July, 1967], No. 32845/68. Addition to 1,156,181. Heading C1C. The apparatus of parent Specification is modified to give a circular settling compartment with a circular surrounding aeration compartment with the sludge recycle means travelling in a continuous circular path.
Patent GB-430799-A (GB)
Title: Improvements in or relating to toy guns
IPC: F41B7/02
Filed: 1934-11-16
Abstract: 430,799. Toy guns. SCHMELTZ, C., 57, Rue de France, Nice, France. Nov. 16, 1934, No. 32988. Convention date, Nov. 16, 1933. [Class 132 (iii)] Rubber rings K, Fig. 4, are stretched between a notch G, Fig. 3, at the muzzle and the breach D, E and are released manually one by one by the thumb. The gun may comprise a stamped, moulded or pressed flat member and the rubber rings may be obtained from disused inner tubes of tyres. The barrel part of the gun may be in two parts slidably adjustable in length to take rings of different size. Fig. 6 shows a modified form of gun.
Patent GB-337196-A (GB)
Title: Improvements in invalid tables
IPC: A47B23/00
Filed: 1929-10-31
Abstract: 337,196. Leicht, W. Oct. 31, 1929. Lectern desks. - In an invalid's table, music stand, or like device of the kind comprising a telescopic standard and an arm with an adjustable table top on it, the top m is provided with raised edges n and spring clips p for holding books &c. The top is connected by brackets t, Fig. 2, to the arm g, which is connected to the telescopic standards b, c by a screw clamp h and discs f formed with shoulders i to limit the pivotal movement of the arm. On the part b of the standard is an auxiliary table z adjustably connected to the arm w by screw and nut devices; the arm is connected to the standard by a screw clamp u.